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Preparation device and preparation method for asphalt mixture trapezoidal beam test specimen

A technology for asphalt mixture and production device, which is applied in the direction of measuring device, preparation of test samples, analysis of materials, etc., can solve the problems of poor molding quality, long production cycle, large dimensional error, etc., and achieve good integrity of the test piece. , The effect of short production cycle and reduced cost of processing specimens

Active Publication Date: 2016-09-14
HEBEI PROVINCIAL COMM PLANNING & DESIGN INST
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  • Abstract
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Problems solved by technology

The combination device of the present invention adopts a new manufacturing method, improves the molding method of the test piece in principle, and solves the problems of long manufacturing cycle, large size error, and poor molding quality.

Method used

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  • Preparation device and preparation method for asphalt mixture trapezoidal beam test specimen
  • Preparation device and preparation method for asphalt mixture trapezoidal beam test specimen
  • Preparation device and preparation method for asphalt mixture trapezoidal beam test specimen

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Embodiment Construction

[0058] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0059] Explanation of relevant terms involved in the present invention:

[0060] 1. Modulus: It refers to the ratio of the stress to the strain of the material under stress. It originally refers to a mechanical parameter of the material within the elastic limit. Therefore, when no definite article is added, it is often considered to refer to the elastic modulus, that is The ratio of stress to strain is a constant. The size of this value indicates the ability of the material to resist elastic deformation under the action of external force.

[0061] 2. Cementing material: Refers to synthetic polymers or organic mixtures containing asphalt, and viscous s...

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Abstract

The invention relates to a preparation device and preparation method for an asphalt mixture trapezoidal beam test specimen; the device comprises a hydraulic system, a pressure control system, a counter force frame, and a test mold assembly; the counter force frame is erected at the upper part of a hydraulic jacking rod; the test mold assembly is arranged at the top of the hydraulic jacking rod and includes an upper press head, a lower press head and a test mold; the test mold has an inner cavity; the lower press head is located at the bottom of the inner cavity of the test mold; the upper press head presses the test mold from the upper part. The test mold assembly presses against the counter force frame in virtue of the jacking force of the hydraulic system so as to extrude and mold the test specimen. Rolling forming of the prior art is changed, only simply mixing static-pressure molding of trapezoidal beam test specimen-demolding cooling maintenance are required, the production cycle is short, and the molded test specimen has small error; and static pressure molding has no damage of high-frequency vibration during cutting of a specimen in the prior art on the test specimen.

Description

technical field [0001] The invention relates to a method for manufacturing an asphalt mixture test piece, in particular to a trapezoidal beam test piece manufacturing device and a manufacturing method for testing parameters such as the stiffness modulus and bending-tension fatigue of the asphalt mixture. Background technique [0002] In recent years, my country's highway construction has developed rapidly, but due to the increase in traffic load, the early damage to the road surface has become more and more serious, so that the road surface has to be repaired frequently, which not only causes a waste of construction investment, but also brings negative effects on normal social activities Inconvenience. Analyzing the causes of the early diseases of the existing asphalt pavement, many factors have an impact on it, and the type of pavement structure currently used is considered to be one of the main reasons. [0003] Since the construction of highways in our country, the semi-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 何勇海薛善光孟会林王庆凯闫涛母焕胜严华高海涛
Owner HEBEI PROVINCIAL COMM PLANNING & DESIGN INST
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